Question

A bluish-grey metal used for galvanizing iron is mixed with an aqueous solution of a substance B. On warming the contents, a gas C and a salt D are produced. C burns with a pop sound. In salt D, the metal is a part of the negative ion. Identify B and D. Write the balanced chemical equation.

Answer 1

Answer:

• to protect iron articles a layer of zinc or chromium is plated over them this is called galvanization.
• the substance B is water because water becomes more acidic when temperature is increased.
• and acids react with metal to form hydrogen gas and salt.
• C is the hydrogen gas which burns with a pop sound
• D is the salt of the metal dipped in the acid.

1. let's assume the bluish-grey metal used for galvanizing iron is Zinc
2. aqueous solution of a substance B to be Water
3. On warming the contents, a gas C and salt D hydrogen gas and zinc hydroxide respectively.

the balanced reaction of above story is given below:-

Zn + 2H2O ----→ Zn(OH)2 + H2

follow me for more help in Physics and Chemistry also give it a brainliest.

if you want me to inbox you then let me know in the question